Sony STR-K790 Service Manual - Page 13

Str-k790, Diagrams - boards

Get Sony STR-K790 - Lifier PDF manuals and user guides View all Sony STR-K790 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 13 highlights

SECTION 4 DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For Schematic Diagrams. Note: • All capacitors are in µF unless otherwise noted. (p: pF) 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1/4 W or less unless otherwise specified. • % : indicates tolerance. • f : internal component. • 2 : nonflammable resistor. • 5 : fusible resistor. • C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Note: Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié. • A : B+ Line. • B : B- Line. • Voltages and waveforms are dc with respect to ground un- der no-signal (detuned) conditions. No mark : FM • Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances. • Waveforms are taken with a oscilloscope. • Circled numbers refer to waveforms. • Signal path. F : FM J : ANALOG c : DIGITAL I : VIDEO For Printed Wiring Boards. Note: • X : parts extracted from the component side. • a : Through hole. • f : internal component. • : Pattern from the side which enables seeing. Caution: Pattern face side: (Side B) Parts face side: (Side A) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated. • Indication of transistor. C Q These are omitted. BE BCE These are omitted. • Circuit Boards Location STANDBY board POWER board DCAC board HEADPHONE board DISPLAY board STR-K790 HDMI SW board (AEP,UK) HDMI BRIDGE board (AEP,UK) DIGITAL board MAIN board • Waveforms - DIGITAL Board - 1 IC1905 9 (MCLK1) 72 ns 1 V/DIV, 40 ns/DIV 2 IC1101 id (X1) 3.5 Vp-p 41.6 ns 1 V/DIV, 20 ns/DIV 3 IC1301 ws (XIN) 4.2 Vp-p STR-K790 81.4 ns 1 V/DIV, 40 ns/DIV 4.2 Vp-p 13 13

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
13
13
STR-K790
STR-K790
•
Circuit Boards Location
SECTION
4
DIAGRAMS
For Schematic Diagrams.
Note:
•
All capacitors are in
µ
F unless otherwise noted.
(p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
•
All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
No mark : FM
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
•
Waveforms are taken with a oscilloscope.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: FM
J
: ANALOG
c
: DIGITAL
I
: VIDEO
For Printed Wiring Boards.
Note:
•
X
: parts extracted from the component side.
•
a
: Through hole.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
•
Indication of transistor.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• Waveforms
– DIGITAL Board –
1
IC1905
9
(MCLK1)
1 V/DIV, 40 ns/DIV
72 ns
3.5 Vp-p
2
IC1101
id
(X1)
1 V/DIV, 20 ns/DIV
41.6
n
s
4.2 Vp-p
3
IC1301
ws
(XIN)
1 V/DIV, 40 ns/DIV
81.4 ns
4.2 Vp-p
DIGITAL board
MAIN board
DISPLAY board
HEADPHONE board
POWER board
DCAC board
STANDBY board
HDMI BRIDGE board (AEP,UK)
HDMI SW board (AEP,UK)
Note:
The components identi-
fied by mark
0
or dot-
ted line with mark
0
are
critical for safety.
Replace only with part
number specified.
Note:
Les composants identifiés
par une marque
0
sont cri-
tiques pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.